package com.itheima.a02StaticDemo2;

public class ArrayUtil {
    private ArrayUtil(){}

    public static String printArr(int[] arr){
        StringBuilder sb = new StringBuilder();
        sb.append('[');
        for (int i = 0; i < arr.length; i++) {
            if(i == arr.length - 1){
                sb.append(arr[i]);
            } else{
                sb.append(arr[i]).append(", ");
            }
        }
        sb.append("]");
        return sb.toString();
    }
}
